Digital color photographic image video display system

Details Digital color photographic image video display system Digital color photographic image video display system

1984-04-26

1986-06-24

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 11, 358 15, 358133, 358142, 358147, H04N 1102, H04N 1106

Patent

active

045970050

ABSTRACT:
In a color photographic video data conversion system digital data representing each of three primary color components of a pixel is converted (i.e. encoded) to digital data comprising luminance data for the pixel and smoothed (i.e. averaged) chrominance data for a group of contiguous pixels, thereby reducing for transmission the amount of data required to represent picture information. Chrominance data for a group of four pixels in a two-by-two array is selected for smoothing, the human eye being about one quarter as sensitive to color as brightness. When the digital video data is received, the luminance and chrominance data is converted (i.e. decoded) to primary color data comprising data representing satisfactorily each of three primary color components for a pixel. The method of, and apparatus for, both encoding and decoding data in the data conversion system is provided.

REFERENCES:
patent: 4516151 (1985-05-01), Stahler

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